I'll Be in Charge of Your Body

Sae Akino, who works at an apparel company, Lila, has a younger assistant, Kamiyama. Kamiyama works hard even though Sae is rough on him. He is someone Sae can count on, but he also tells her: "You're my type, Ms. Akino." One day, Sae gets fired suddenly unreasonably. Kamiyama tells Sae, who is very depressed, "If you'd be my maid, I can get your job back at Lila." He calls Sae by her first name and gets her into bed as if his personality has changed all of a sudden. Why does Kamiyama obsess over Sae so much? He also seems to have known her for a long time...